Visual weather-screen.



S. A. DE NORMANVILLE u L. H. KENT.

VISUAL WEATHER SCREEN.

APPUCAUON HLED MAYB, 19174 1,297,805. Patented Mall'. 18, 19151.

SAMUEL AUGUSTINE DE NORMANVILLE, 0F EALING, AND- LESLIE HARCOURT KENT, 0F STANMORE, ENGLAND.`

VISUAL WEATHER-SCREEN.

memos.

Specification of LettersPatent.

Patented Mar. 18, 1919.

To all lwhom it may concern Be it known Ithat we, SAMUEL AUeUs'rrNn DE NORMANVILLE and LESLIE HARcoUR'r KENT, both subjects of the King of Grreat Britain, residing at Ealing, Middlesex, England', and Stanmore, Middlesex, England, respectively, have invented certain new and useful Improvements in Visual Weather- Screens, of which the following is a specification.

This invention relates t0 improvements in visual weather screens in which a transparent disk is rotated so'that rain and spray driving against it are thrown 0E under centrifugal action.

The 'invention comprehends means for mounting the disk and means for ldriving it by which it may be rotated at a speed sufficiently high to insure complete transparency being maintained without the aid of wiping devices such as have hitherto been necessary with a slowly rotating disk.

To meet these conditions the diskmust be mounted in a firm support but the spport and the driving mechanism should be such as to offer the minimum obstruction zto the sight of the observer.

The invention also comprises'details hereinafter referred to for increasin .the eiliciency of the screen and forfacilitating its use.

In the drawings:

Fi ure 1 is .a side sectional ,velevation of one orm of screen according t'o the invention applied `to a look-out suitable `for use on a ship or in a similarly exposed position.

Fig. 2 is a etal view of a universal joint.

Figs. 3 an 4 are detail sectional views 'illustrating different forms of rims forv the In one form of the invention as illustrated by Fig. l, the hood 1 or shelter is revolubly mounted on a pedestal 2. The hood 1 is closed in front but lopen at the back andhas a bottom or table`3, for the observer to lean u on with his head and shoulders in shelter. T rough the bottom of the hood passes a sleeve 4 firmly clamped toit by a ring nut 5. This sleeve 4, carryin the'hood, is passed over the top of the p'e estal 2. In order to allow for adjustment in height, the sleeve 4 is internally threaded for art of its length and engages with a threa ed head 6 on the top ojfwthe pedestal 2 so that when the hood is revlved continuously the hood will rise gle grease cu or fall'. The hood may be fixed or locked, when not requiredl for use, by a locking screw 7 provided on the lower plain part 8 of the sleeve 4 lwhich is preferably la sliding fit on aV corresponding part 9 of the pedestal 2.

The glass disk 10 is mounted to run within a circular ring or housing l11 having a bracket or radial arm 12 preferably cast in one with it, which carries a central bearing 13 through which the disk spindle 14 passes. The disk 10 is clamped between two nuts 15 on the spindle. These parts form a unit which is fixed into an opening in the front of the hood 1 and which is easily removable for repair or adjustment.

In the form shown in Fig. 1 the disk 10 ,is clamped on the spindle 14 so as to rotate therewith. y

The driving of the disk 10 is effected by a motor preferably an electric motor 16 arranged within'the pedestal 2. It drives a vertical shaft v17 passing up centrally through the .pedestal and sleeve 4 into the hood 1, and provided with a sliding joint or coupling 18 to allow for the rise and fall of the hood. The shaft is connected, at its upper end, to the spindle 14 of the disk 10 by means of a short shaft-or link 19 vat an angle of about 45 and two Hooks couplings or similar 'universal-joints 20, one at each bend.v A suitable universal joint is shown in Fig. 2 and comprises a square block 21 drilled with four holes at right angles meeting at the center and receiving four ins22 screwed in pairs into two forks'23, al lubricated from the center of the block by a sin- 24 occupying one of its vacant sides. The mk is provided with av sliding vjoint 25 for automatic adjustment in length f and ease in'assembling and dismolmting.

The drivin shaft may pass'- through a packing glan 26 on the top ofthe sleeve 4.

The rheostat 29 for the motor 16 and of usual construction may be arranged on the inside. of the door 30 givin access to the motor, a central knob 31 on t e door actuating` the rheosta' t fromoutside.

he peripheral edge'of the disk may be" beveled and may run in close proximity to a corresponding bevel on the circular ring or housing 11, clearance being adjusted by means of the nuts 15 above described. Or such bevel may be formed on a metal rin 32, Fig. 3, s un or clamped on to the dis 10 to strengt en it.

In another form the-disk l0 has a pro- `jecting cylindrical rim 33, Fig. 4, adapted vtorun over a similar fixed rim on the frame 11.v

By passing the drivingshaft into the hood through the axis of"l rotation ofthe latter, movements of the hood do not interfere with the driving gear. v

'We claim 1. In look-out apparatus, a hollow subor flange 34 stantially vertical pedestal having its upper' end screw threaded, la sleeve rotatable upon the upper portionof the pedestal and having screw threaded engagement therewith to be raised and lowered upon the rotation of the sleeve, means to lock the sleeve to the pedestal against rotation with relation thereto, a hood rigidly secured to the sleeve and having a forward side provided with an opening, a rotatable transparent element vspanning the opening, a substantially vertical shaft arranged within the upper portion of the hollow pedestal, means to gear the upper end of the shaft withthe rotatable with an opening, a bearing arranged sub-f stantially centrally of the opening and having an arm secured to the hood and entirely supported thereby, a spindle rotatable within the bearing, a transparent element spanning said opening andjsecured to the extending longitudinally within and through the substantially vertical hollow spindle, and driving connecting means between the upper end 'of the drive shaft and the spindle.

3. In look-out apparatus, a hollow substantially vertical pedestal,I a sleeveV rotatably mounted upon the upper portion of the pedestal, a hood provided in its bottom with an opening to receive thesleeve and having its forward side provided with a look-out opening, means to clampsaid bottom to thesleeve, -a ldrive shaft extending longitudinally through the hollow pedestal and sleeve, `a ring arranged within the lookout opening and secured to the forward side of the hood, a radially disposed arm rigidly secured to the ring and projecting inwardly therefrom' with it's'inner end disposed near the center of the look-out opening, a bearing f carried by the inner end of said arm, a spintially centrally of the opening and having,v

an arm secured to the hood and entirely supported thereby, a spindle rotatable within the bearing, a frame carrying a transparent element spanning said opening and secured to the spindleto be rotated thereby, the frame being beveled on its outer edge to correspond with the beveled wall of the opening, a drive shaft extending longitudinally within and through the substantially vertical hollow-spindle, and driving coni necting means between the upper end of the 'drive shaft and the spindle;

In testimony whereof we have signed our names to this specification in thepresence of two subscribing witnesses. 'spindle tobe rotated thereby, a drive shaft SAMUEL AUGUSTINEDE NORMANVILLE. LESLIE HARGOURT KENT.

`Witnesses to the signature of Samuel Au- Witnesses to the signature of Leslie Har- -court Kent:

' I-I. A. MoRToN, A. E. KENT. 

